SmartPro Instrument vs Gemetrix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartPro Instrument
This app displays measurement test results synchronized with specialized devices. It allows users to generate, share, and print certifications for diamonds and other gemstones after completing required tests.
- Synchronized measurement test results
- Generate gemstone certifications
- Share and print certifications
- Supports Diamonds, Moissanites, CVD/HPHT
- Works with multiple SmartPro devices
Read full descriptionHide full description
This application is used to display measurement test results which is synchronized with SmartPro devices. Users may generate, share and print certifications for Diamonds, Moissanites and CVD/HPHT by completing the required tests and certification form. Available SmartPro Devices 1. Reader I: Identifying between Diamond, Moissanite and Simulant. 2. Gem-Eye I: Distinguish between diamond and its other simulants. 3. Screen I: Identifying between Natural Diamonds from Synthetic Diamonds CVD/HPHT. 4. Optimum I: Identifying between Natural Diamond, CVD/HPHT and all types of Moissanite. 5. Primo I: Digital Gem Gauge, measures small dimensions accurately in millimeters with direct conversion to carat unit. Follow us on: https://www.youtube.com/channel/UC_8CvolTj8jbXJkwvZbdb5Q/videos) Website: https://www.smartproinstrument.com/
Gemetrix
Control your smartphone camera's exposure, ISO, color temperature, and focus for both short-wave and long-wave UV illuminations. Compare captured images side-by-side or with a slider, and save them with clear labeling.
- UV illumination control (SWUV & LWUV)
- Adjustable exposure, ISO, color temperature, focus
- Side-by-side image comparison
- Image slider comparison
- Save labeled images
Read full descriptionHide full description
This app allows control of your smartphone camera, using the same settings for both short-wave ultra-violet (SWUV) and long-wave ultra-violet (LWUV) illuminations. The controlled settings are for exposure, ISO, color temperature and focus. The two images can then be compared either through alternating views or using a slider. Images with SW and LW labeling can be saved to your image gallery.
Screenshots
Verdict
The clearest difference is review sentiment: Gemetrix at 50% against SmartPro Instrument's 0%. Gemetrix also leads on rating (2.2 vs 1.8) and iOS requirement (10.3 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Gemetrix holds the better App Store score, 2.2 against 1.8. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews point the same way: 0% of SmartPro Instrument's written reviews are positive against 50% of Gemetrix's.
SmartPro Instrument ships an update every 2 months, Gemetrix monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | SmartPro Instrument | Gemetrix |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (8 ratings) | 2.2 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 8 — better | 5 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 10.3 — better |
| Further details — not scored | ||
| Size | 44 MB | 18 MB |
| Age rating | 17+ | 4+ |
| Developer | SmartPro Instrument Co., Ltd. | John Chapman |
Customer experience
SmartPro Instrument
Gemetrix
In-app purchases
SmartPro Instrument
No in-app purchases
Gemetrix
No in-app purchases
Questions
Is SmartPro Instrument free?
Is Gemetrix free?
Which has better reviews, SmartPro Instrument or Gemetrix?
Do SmartPro Instrument or Gemetrix have ads?
Which is updated more often, SmartPro Instrument or Gemetrix?
Other comparisons
